addded notification

public/js/Class/SubscribePusher.js

@@ -0,0 +1,16 @@
+class SubscribePusher {
+    constructor(subscribe, event, apikey) {
+        this.subscribe = subscribe;
+        this.event = event;
+        this.apikey = apikey;
+    }
+
+    channel_subscribe() {
+        let channel = pusher.subscribe(this.subscribe);
+        channel.bind(this.event, function(data){
+            callback(data);
+        });
+    }
+}
+
+export default SubscribePusher;